Block-printing machine.



G. PRIFOLD. BLOCK PRINTING MACHINE. APPLICATION FILED MAY 13, I915.

Patented July 6, 1915.

2 SHEETSSHEET I.

G. PRIFOLD.

BLOCK PRINTING MACHINE. APPLICATION FILED MAY13,1915.

nine snare GEORGE PRIFOLD, F LINWOUD, PENNSYLVANEA, ASSIGIJUE T0 FRANK B. FOSTER, OF

' i HAVERFORD, PENNSYLVANIA. I

BLOCK-PRINTING MACHINE.

minivan.

Specification of Letters Patent.

Patented July i inilti.

Application filed May 13, 1915. Serial Ito. 27,824.

To all whom it may concern Be it known that l, GEORGE Pnlrono, a citizen of the United States, and a resident of Linwood, county of Delaware, State of Pennsylvania; have invented certain Improvements in Block-Printing Machines, of which the following is a specification My invention relates to certain improvements in block printingmachines for printing oil cloth, linoleum, and similar fabrics,

in which the block carriers reciprocate toward and from the fabric and, when the blocks are raised, the inking mechanism inks the impression surface of theblocks and, during this interval, the fabric is moved intermittently a predetermined distance, depending upon the width of the printing surface of the blocks.

The object of my invention is to provide means for automatically engaging, holding and releasing the block carriers so that certain impressions can be made by certain blocks at given points on the fabric.

The invention is particularlvadapted for printing bordered rugs in which the border extends on the four sides of the rug, necessitating the holding of certain of the blocks out of action while portions of the fabric are passing thereunder.

In the accompanying drawings :Figure 1, is a side view of a block printing machine illustrating my invention and showing" five block carriers; Fig. 2, is an enlarged side view of a portion of Fig. 1, showing, the mechanism more in detail; Fig. 3, is a longitudinal sectional view 'on the line a-c, Fig. 2; Fig. 4, is an enlarged. view of the broken gear and its shaft; Fig. 5, is a side view illustrating a modification of the in vention; Fig. 6, is a sectional plan view of the modification; and Fig. 7, isa diagrammatic view of a rug which can be printed upon my improved machine.

Referring to the drawings, 1 is the frame of the machine having guides 2 for the vertical members 4: of the block carriers 3. The side members of the block carriers are connected by a transverse beam 5 which can ries the printing blocks 6.

7 is a transverse operating shaft driven from a main longitudinal shaft 8 by worm or other gearing.

9, 9 are cams on the shaft 7 and these cams come contact with rollersTUbnthe carriers As the cams rotate, the carriers are raised clear of the surface of the fabric so asto allow the fabric to be moved and at the same time the reciprocating inking mechanism 11 is traversed under the block carriers to ink the printing surface of the blocks. At each side of the machine is an endless belt 12' which passes around wheels 13 and these belts engage the fabric and move it longitudinally. lvlechanism is pro vided for intermittently moving the belts a given distance according to the width of the'printingsurface of the blocks.

'14, 14 are latches mounted on shafts 15 and arranged to engage lugs 16 on the ver tical members 4 of the carriers 3, as clearly shown in Fig. 2. The high. portions 17 of the cams lift the carriers above the path of the latches 14 so as to allow the latches,

which have weights 18, to move under the lugs 16, so that when the carriers are lowered by the cams their movement is stopped by the engaging latches 14%. The carriers are released from the latches when the car-- riers are in the full elevated position: the highportion of the cams 17 being under the rollers 1.0 the mechanism is so timed as to withdraw the latches and hold them out of engagement until the lugs pass the latches, when an impression can be made.

On the shaft 15 is a bevel gear wheel 19 and on a longitudinal operating shaft are bevel wheels 21 in which the teeth are interrupted so that, during a portion of the revolution of the shaft 20, the gears 19 are turned and. during the remainder of the revolution the blank spaces of the inter rupted gear 21 will pass the teeth of the gear 19, consequently, no motion will be impart ed to the gears 19 or to "'ie At one end of the shaft 20 is a bevel gear wheel 22, i

of the machine and are set so as to operate certain sets of carriers at different times.

If, for instance, a three-part rug, shown in Fig. 7, is to be printed in two colors it will take six independent printingblocks, three in each color. Two of the blocks will print the section a, two the section '2; and

two the section 2, but while the pcrticzi- .e

21 is secured to its shaft by a set screw 26 so that it can be turned 'onthe shaft to any position desired and locked on the shaft according to the time it is desired to holdits carrier out of action.

In some instances, asillustrated in Figs.

Q 5 and 6, a rack may be used to engage the gears l9 on the shaft 15 -and the broken gear 23 may be located between the rack and the main driving shaft 2%. The gear teeth on the rack may be made in sections and these sections may be shifted, as desired. here may be as many of these racks as desired, in the presentinstance I have shown three, Fig. 6. The broken gear 23 may move the racks in one direction and coiled springs 27 may return the racks.

I claim l. The combination in a block printing machine, of a frame; block carriers mounted on the "frame; means for reciprocating the carriers to make an impression; a latch arranged to engage each carrier; an operating .shaft; broken gears between the operating shaftand the latches so that certain of the latches will engage their. carriers to hold said carriers out of action; and means for intermittently moving the fabric to be printed by the blocks mounted on the carriers.

2.- The combination of a frame; a series actuate the latches.

of carriers; blocks mounted on the carriers; cams for operating the carriers; a latch for each carrier arranged to hold the carrier out of position; means for intermittently moving the fabric under the carriers so that the fabric will receive an impression while it is at rest; a longitudinal shaft; broken gears on the shaft; gears on the latches engaging the broken gears; and means for driving the longitudinal shaft so that, at predetermined intervals, certain of t e carriers will be held out of action by the la ches.

3. The combination of a frame, a carrier mounted on the frame; a printing block mounted on the carrier; means for ralsin the carrier; means for intermittently feeding the fabric to 'be printed under the blocks; a latch arranged to engage the carrier and vto hold it out of action; a gear,

Wheel controlling the latch; a shaft; and a broken gear wheel on the shaft meshing with the gear wheel controlling the latch so that, when the timed portion of the broken gear is in engagement with the gear wheel, it

will turn the latch and will release the car rler.

4. The combination in a block printing machine, of a frame; a series of vertically reciprocating carriers; printin blocks .on the carriers; cams for raising t e carriers; means for driving the cams; means for intermittently feeding the fabric under the printing blocks; a longitudinal shaft; means for driving said shaft; a latch arranged to engage the carrier; a transverse shaft upon which the latch is mounted; a gear wheel on each transverse'shaft; and a broken gear adjustably mounted on the longitudinal shaft at each carrier and meshing with the gear Wheel of the carrier and arranged to GEORGE PRIFOLD.

Copies olthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' 4 Washington, D. C. 

